Models with this rule receive +1 To Hit and To Wound (a roll of 1 still fails) if at least one enemy model in base contact with the unit has a higher Weapon Skill or Strength characteristic (before modifiers for weapons).
Source: Warhammer Armies Project: Unofficial 9th Edition (v2.2)
Models with this rule receive +1 To Hit and To Wound (a roll of 1 still fails) if at least one enemy model in base contact with the unit has a higher Weapon Skill or Strength characteristic (before modifiers for weapons).